[TowerTalk] Th6dxx swr
Lee Buller
k0wa at swbell.net
Wed Oct 15 12:55:51 EDT 2008
Bob,
I set the ones I have used for mid-band. That gave me the best band coverage on 20-15-10. Make sure you waterproof the traps. The balun should be good.
That low to the ground you will not get a good reading. As the other feller said....stand it up on the reflector vertically. Watch out for overhead wires.
Lee - K0WA
In our day and age it seems that Common Sense is in short supply. If you don't have any Common Sense - get some Common Sense and use it. If you can't find any Common Sense, ask for help from somebody who has some Common Sense. Is Common Sense divine?
--- On Tue, 10/14/08, Bob Ortasic <rortasic at neo.rr.com> wrote:
From: Bob Ortasic <rortasic at neo.rr.com>
Subject: [TowerTalk] Th6dxx swr
To: towertalk at contesting.com
Date: Tuesday, October 14, 2008, 7:20 PM
>From KN8M..
Just finished putting together a th6dxx. I have it on a mast approx 6foot off
the ground for testing..
I cut all three bands for the low end (CW). I don't spend a lot of time on
SSB and figured the rig tuner will take care of SSB contacts..
Using an MFJ SWR Analyzer I find that the resonant freq on all 3 bands are
below the bottom edge of the band. I haven't graphed it yet.. But on 20 mtrs
am 2:1 at about 14030?? Anyone have any thoughts..
I am running the Analyzer through approx 50 foot of coax into the antenna.
I am using a W2AU Balun. Is there a certain pig tail length from Balun to feed
point?? Also, is there a certain pigtail length from beta matching to feed
point??
Help appreciated,
Bob KN8M
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